Thrashing-machine



UNITED STATES PATENT OFFICE.

- GILBERT L. SHELDON, or new MARLBOROUGH, MASSACHUSETTS.

THRASHING-MACHINE.

Specification formingpart ofiLetters Patent No. 44,224, dated septcmber 13, 1864.

To all whom it may concern:

. Be it known that 1, GILBERT L. SHELDON, of lglew Marlborough, in the county of Berkshire and state of Massachusetts, have invented a certain new and useful Improvement in Thrashing-Machines; and I do hereby declare. that the followingis a full, clear, and exact descrip tion of the same, reference being had to the acccompanying drawings, making a part of this specification, in whicha Figure 1 is a perspective view, and Fig. 2 is a horizontal elevation, of my said invention.

The same letters indicate like parts in both the figures.

The nature of my invention consists, first, in so forming and inclosing the ordinary box of the thrashing-machine as to make a dust-box of the same, in such a way as to prevent-the dust from escaping, except in the'manner invented by me and described as follows; second, the nature of my invention further consists in attaching in any suitable way to the said box of the machine a pipe, flexible or otherwise, by means of which the dust arising from the thrashing may all be conducted away third, the nature of my invention further consists in attaching and combining with-the thrashingcylind'er a row or set of knives, which are so arranged in connection with said cylinder as that. when the straw is damp, or from any oause'elings and winds up upon the cylinder, the said knives intervening between the stubs or teeth of the thrashing -cylinder, in vthe nature or arrangement of a sausage-machine,

will cut and release the said straw, thus altogether overcoming several very grave objections and disadvantages attending the use ofthrashing-machines as now ordinarily constructed.

In the drawings, E is the box or body of the machine. B is the thrashing-cylinder, and O U are flaps or curtains, attached, as shown in Fig. 1, in such a manner as that the straw to be thrashed can be fed underneath the front curtain at A, and thence, after passing in contact with the thrashing-cylinder, will be ejected from underneath the rear curtain,

- as at- A.

These flaps or curtains are retained in appropriate position bytheir weight or stiffness and by the straw as it is being passed into or out from the machine, and so, in combination with the body of the machine, form a box, dust-tight or nearly so.

D is a pipe attached to E, formed and adjusted. in any suitable manner, and of any convenient length and size, and communicating with the interior of the machine. The action of the cylinder will create a current of air, and the dustwill pass out through the pipe 1), as indicated by the curved arrow, or without the pipe 1) it will pass out with the straw, the rear curtain being removed for that purpose.

. In Figs. 1. and 2 itwill beseein the stubs or teeth 3 s s s s of the thrashing-cylimler B are intersected by the knivesr 1' M, Fig. 2, which are attached to the body of the machine in any suitableor convenient way, as plainly shown in the figures. These knives reach out to the cylinder B. The sharpened or cutting sides of these knives are set adversely to the revolutions of the cylinder, so that any straw which may wind or entangle itselt' upon the cylinder will be immediately out and re- .leased therefrom.

and for the purposes described.

GILBERT L. SHELDON.

Witnesses:

S. W. WRIGHT, AMMI WORSNER. 

